在这里,我们在泡沫镍(Co-NiSMoO/NF)上原位生长了共结合的NiOSO4-NiMoO4异质结构。将S2-和MoO42-引入CoNi-ZIF前体导致组成和电子重构,产生Co-NiSMoO/NF纳米结构。形态学上的吸引人的特征,composition,和电子结构共同赋予它们高的电催化性能。因此,Co-NiSMoO/NF纳米结构对析氧表现出优异的电催化性能,尿素氧化,因此整个水/尿素分解反应(OER/UOR/OWS/OUS)。具体来说,Co-NiSMoO/NF显示出高的电催化OER活性,在碱性条件下,过电位为172mV@10mAcm-2,238mV@20mAcm-2,278mV@50mAcm-2,308mV@100mAcm-2。对于UOR,过电势低至1.318V@10mAcm-2,1.330V@20mAcm-2,1.346V@50mAcm-2和1.401V@100mAcm-2。尤其是,记录电池的电压甚至下降到1.446V@10mAcm-2到OUS。此外,Co-NiSMoO/NF电催化剂对OER仍然稳定,UOR,和OUS甚至长达100小时。更重要的是,我们还以太阳能驱动的绿色方式实现了H2生产。在太阳能电池板上的阳光照射下,H2生产速度甚至高达408Lh-1m-2。
Herein, we grew in situ Co-incorporated NiOSO4-NiMoO4 heterostructures on nickel foam (Co-NiSMoO/NF). The introduction of S2- and MoO42- into CoNi-ZIF precursor leads to the compositional and electronic reconstruction, resulting in the Co-NiSMoO/NF nanostructures. The attractive features in the morphology, composition, and electronic structure cooperatively endow them with high electrocatalytic performances. As a result, the Co-NiSMoO/NF nanostructures exhibit superior electrocatalytic performances to oxygen evolution, urea oxidation, and thus overall water/urea splitting reactions (OER/UOR/OWS/OUS). Specifically, the Co-NiSMoO/NF shows a high electrocatalytic OER activity, with low overpotentials of 172 mV@10 mA cm-2, 238 mV@20 mA cm-2, 278 mV@50 mA cm-2, 308 mV@100 mA cm-2 in alkaline. For UOR, the overpotential is just as low as 1.318 V@10 mA cm-2, 1.330 V@20 mA cm-2, 1.346 V@50 mA cm-2, and 1.401 V@100 mA cm-2. Especially, the voltage of the record cell even drops to 1.446 V@10 mA cm-2 to OUS. Furthermore, the Co-NiSMoO/NF electrocatalysts still stable to OER, UOR, and OUS even for up to 100 h. More importantly, we also realized H2 production in a green manner driven by solar. Under solar illumination on a solar panel, H2 production speed is even as high as 408 L h-1 m-2.